一对表现型正常的夫妇他们的双亲都有一个白化病患者预计他们生一个白化病男孩的概率是 A.1/8 B.1/4 C.3/4 D.1/2——青夏 Template




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tomski一对表现型正常的夫妇他们的双亲都有一个白化病患者预计他们生一个白化病男孩的概率是 a.1/8 b.1/4 coloring